[video=youtube;a_O4151iJOo]https://www.youtube.com/watch?v=a_O4151iJOo[/video]
The above video showcases a direct comparison of 4K shots taken using both the LG G3 and the Samsung Galaxy S5. Although this is arguably subjective, it looks like the Galaxy S5 produces slightly better shots, but the G3 really holds its own and is nearly on par. The video taken includes shots of french fries, an insect, a plant, a statue of an own and a few standard landscape shots as well.
What's really important to take away from this is how stunning an image can be taken with these two high-end smartphones.